Ventilated range



May 6, 1952 J. A. NELSON ET AL VENTILATED RANGE Filed May 8, 1947 Patented May 6, 1952 3 VENTILATED RANGE James A. Nelson and Frederick J. Port, Chicago, 111., assignors to Cribben and Sexton Company, Chicago, 111., a corporation of Illinois Application May 8, 1947, Serial No. 746,718

1 Claim.

Sometimes special structures are set up for drawing on vapors, air, and fumes from the room, but such structures are expensive, and the excessive dilution of the withdrawn material with air is undesired. In ordinary practice, the gases, vapors, and odors released from the cooking appliance contribute to condensation on window surfaces, walls, and furniture, grease deposition requiring excessive cleaning and decorating, and the pollution of atmosphere in the entire house by food odors. Even when means for withdrawing vapors, etc., are located close to the range, the withdrawn vapors have an opportunity to cool and condense, and further there is extensive dilution of the withdrawn vapors by air.

An object of the present invention is to provide means whereby vapors from an internal heating element of the range and from exterior heating elements can be withdrawn with very little air dilution, while at the same timeproviding means for rapid exhausting of the vapors before condensation can take place. Yet another object is to provide a range in which a collector box for such vapors, etc., is supported directly in the frame and in contact with heat radiated from the frame, while maintaining means for exhausting such vapors also directly within the frame, with the result that any condensation that occurs, occurs beyond and outside ofthe. range itself and either after exit into the atmosphere outside the building or adjacent such exit. Yet another object is to provide in such a range, blower means carried directly within the range and adjacent the vapor collector box whereby the vapors can be discharged from the range before condensation can take place and before they can clog up or injure the blower mechanism. Yet another object is to provide a range equipped with an internal vapor collector box and with an internal exhausting mechanism whereby the stove is self-ventilating. drawing in vapors and air from all of the heating elements and dis charging such vapors prior to condensation to surfaces outside of the range. Other specific ob jects and advantages will appear as the specification proceeds.

The invention is illustrated. in a specific embodiment, by the accompanying drawing, in which- Figure 1 is a perspective view of a range emtherefor.

the rear wall for the compartment I5.

2 bodying one phase of our invention; and Fig. 2, a side view in elevation, a portion of the range being shown in section and the section being taken as indicated at line 22 of Fig. 1.

In the illustration given, l0 designates a range equipped with a plurality of top heating elements II and with an internal heating element i2. In the specific illustration given, the elements are gas burner elements, but it will be understood that substitute heating means may be employed. In the specific range structure shown, there is a burner compartment [3 below the top burners H, a pair of oven compartments l4, and a pair of lower-compartments l5 below the oven compartments. The burner 12 is illustrated as a broiler burner located in one of the lower compartments !5 below one of the ovens. The other lower compartment I5 is employed for housing a blower It driven by motor 11.

The range is provided with a rear Wall I8 which extends above the top of the range and then extends downwardly, forming the back wall for the burner compartment l3. A similar wall l9 forms A pair of conduits 20 provide passages or ports 32 connecting the ovens [4 with the chamber 2! provided at the rear of wall E8. The chamber 2| is formed by wall l8 and a collector box .wall 22 spaced from wall I8, and closes at the top with wall 23 and at the bottom with wall 24.

The collector box provided by the walls described extends well above the top of the range It) so as to provide an extended back splasher At its extreme upper end, the box is provided with a plurality of openings 25 providing an intake or inlet for vapors rising from the top burners of the range.

A conduit 26 of reduced cross section communicates with the bottom of the collector box 2|. In the illustration given, the bottom Wall 24 of the collector box is centrally tapered downwardly, as indicated at 21, to receive and merge with the conduit 26.

The conduit 26 extends downwardly and laterally, entering the lower compartment IS in which the blower I6 is mounted. Here the conduit enters the intake portion of the blower l6, and the vapors are discharged by the blower downwardly through conduit 28 into exhaust pipe 29. The exhaust pipe 29 is preferably turned laterally so as to discharge the vapors outside the basement wall.

Operation In the operation of the structure, vapors produced within the broiler compartment pass upwardly through openings 30 into the oven compartment and thence outwardly through the com duits 2!] into box 2!. Air from the lower side of 3 the range is fed to the broiler compartment through an opening 3|. It will be understood that the openings may be of any type or number, and in the event of electric heaters, may be dispensed with entirely.

Vapors rising from food being cooked on the top burners move upwardly and inwardly through the intake 25 into the chamber 2|. Suction induced by the blower l6 within the lower compartment I causes the flow of all of such vapors, together with some air, downwardly and thence through the tapered opening 21 in the conduit 26. Here, by reason of the reduced cross section of conduit 26, .the vaporous material passes at increased velocity and is discharged through the exhaust pipe 29.

In all of the above operations, substantial condensation of vapors within the collector box, blower, and discharge pipe is prevented by the heating of chamber 2| and an increased velocity of discharge of the materials. Chamber 2| is maintained at a temperature tending to prevent condensation by reason of the radiation of heat from the burner chambers upon chamber 2| and by reason of the direct heated gases flowing from compartments l4. To the above, the heat produced in the operation of the motor and blower is directly added and assists in the preventing of condensation. The location of the blower immediately adjacent the collector box 2| not only enables the heat therefrom to be added to the heat of the range in maintaining the temperature within chamber 2|, but also provides for the quick elimination of vapors from the box and before there is an opportunity for condensation. By this means, the blower itself is kept substantially free of grease and other condensed vapors, and the use of filters and other means for removing such condensate is substantially elimi nated.

The products of the enclosed burners, including vapors and fumes from the enclosures, are exhausted directly and never allowed to escape into the room. The products, fumes, and vapors from the top burners of necessity escape around cooking pots, but are caught by the intake 25 close to their point of origin and are not allowed to diffuse into the kitchen.

By reason of the direct pickup of enclosed burner products and the semi-directpickup of top burner products, little dilution takes place. Therefore, greases and other vapors cannot condense on wall and furniture surfaces, relative humidity in the room is reduced, and odors are prevented from traveling to living rooms.

By preventing the mixing of the vapors with air at the very beginning, the present structure makes very little change in the air supplied or remaining within the room and exhausts only the products of the enclosed burners and vapors, plus enough atmosphere to provide velocity sufficient to carry them to the closely- While in the specific illustration given, we have shown much of the structure in great detail for the purpose of illustrating one embodiment, it will be understood that such details may be varied widely by those skilled in the the art without departing from the spirit of our invention.

We claim:

A range having a box-like frame providing an upper cooking surface equipped with burners and having a burner compartment therebeneath receiving heat from said burners, said range also having at least one substantially closed oven compartment beneath said burner compartment and a partially closed lower compartment beneath said oven compartment, means for heating said oven compartment positioned near the partition wall between said oven and lower compartments so as to also heat said lower compartment, a collector boxextending substantially the width of said frame and extending for a substantial distance both above and below the cooking surface of said range, said box having an open interior chamber of substantially the same size as said box and an intake extending across its upper portion for withdrawing vapors rising from the top surface of said range into said chamber, a port at the rear of a said oven compartment in communication with said collector box chamber, said collector box having its bottom extending below the port of said compartment and having its bottom wall tapering inwardly near the center thereof, an

' range, whereby said collector box chamber relocated inlet. The exhaust here through the ceives heat from the heated compartments within said range which tends to prevent the condensation of vapors in said chamber.

JAMES A. NELSON. FREDERICK J. PORT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 607,976 Amos July 26, 1898 888,163 Hanson May 19, 1908 1,584,619 Lloyd May 11, 1926 1,969,565 Klemme Aug. '7, 1934 2,081,640 Petersen May 25, 1937 2,182,106 Ames Dec. 5, 1939 2,302,268 Sickinger Nov. 1'7, 1942 2,417,842 Sanford et a1 Mar. 25, 1947 2,482,952 Warren Sept. 27, 1949 FOREIGN PATENTS Number Country Date 370,160 Great Britain Apr. 7, 1932 

